@Insectatorious: To answer your question to @Token: No, but, Right....makes sense...the trouble is I've simplified the tables and their respective structures to post this question..I'll try and get the. Before exploring the differences between Inner Join Vs Outer Join, let us first see what is a SQL JOIN? But I'm not worried about readablity. Using IN , EXISTS clause generates the same execution path and are best. Generally speaking JOINs are much better than EXISTS & EXISTS is better than IN, performance wise. http://www.xs4all.nl/~gertjans/sql/example2/no-columns-from-autojoined-table.html for more information). The above query can be rewritten without using inner join like below but the performance will be impacted compared to inner join – IN is equivalent to a simple JOINso any valid join … Not completely identical, but the only difference is that the hash join for the IN shows a Hash Match (Right Semi Join) and the hash join for the INNER JOIN shows a Hash Match (Inner Join) So, to optimize performance, you need to be smart in using and selecting which one of the operators. View query details This query returns all 10 values from the t_outerinstantly. Please try to include actual execution plan while trying to compare the below 2 queries, the execution plan depends on the sp of MS SQL Server which you
Dance of Venus (and variations) in TikZ/PGF. In SQL Server, while most queries which employ CROSS APPLY can be rewritten using an INNER JOIN, CROSS APPLY can yield better execution plan and better performance, since it can limit the set being joined yet before the join occurs. What is the difference between “INNER JOIN” and “OUTER JOIN”? Performance difference: condition placed at INNER JOIN vs WHERE clause, How digital identity protects your software, Podcast 297: All Time Highs: Talking crypto with Li Ouyang, Putting filters in INNER JOIN instead of WHERE.